'Two Women' episode
Just saw the series' last episode "Two Women", which guest starred Jane Wyatt and Lynda Day (later Lynda Day George). This episode (briefly) reunited Jane Wyatt and Mark Lenard, who had previously played Spock's parents on the Star Trek series and would later appear in the same roles in various Star Trek movies, albeit they only appeared together in one scene in this episode.
Jane Wyatt plays Emma Peak, a woman returning to Seattle after over 40 years in San Francisco, with Lynda Day as her niece. We soon learn that she was in love with the Bolt brothers' father, who left her to return to Scotland and marry the boys' mother. As the episode unfolds, we learn that her motive for returning was to ruin the brothers financially and break them up, using her niece to do the latter by creating a romantic triangle with Jason and Joshua. As her obsession deepens and becomes more delusionary, she ends up trying to shoot and kill Jason Bolt, believing him to be his father. Jason disarms her by playing along with the delusion, and her niece takes her back to San Francisco a broken and presumably still mentally disturbed woman.
Am I the only one who wonders why the Bolt brothers didn't just try to fix Emma up with their Uncle Duncan (whom we met a couple of episodes earlier), who was their father's identical twin, and was unattached and traveling around the West at the time?